JSSC 2019第1期Power Management0.25µmBoost Converter

A Self-Oscillating Boosting Ampliﬁer With Adaptive Soft Switching Control for

设计了一种用于水下通信的高压放大器，结合升压和信号生成，提升系统效率。

85%峰值效率，20W输出功率，30kHz信号频率

高压放大器压电换能器自适应软开关升压转换器功率效率

▸创新点1：单级升压转换器 - 将升压和信号生成功能集成在单一升压转换器级中，显著提高了系统整体效率，减少了电路复杂性和成本。

▸创新点2：自适应软开关技术 - 采用自适应软开关技术，通过动态控制电感电流纹波，确保转换器在全输出功率范围内保持软开关状态，提高了功率效率。

▸创新点3：动态控制电感电流纹波 - 通过动态调节电感电流纹波，优化了转换器的开关损耗，进一步提升了系统的能效，特别是在高频信号应用中。

▸创新点4：高集成度反馈控制 - 在0.25 µm 60-V TSMC工艺中实现了反馈控制和软开关调节，结合外部功率级，系统在20 W输出功率下达到85%的峰值效率，适用于30 kHz信号频率。

Abstract

This paper describes the design of a high-voltage ampliﬁer for a piezoelectric transducer used in underwater communication applications, which incorporates boosting and signal generation within a single boost converter stage improving the total efﬁciency of the system. The proposed architecture combines hysteretic ripple current-mode control with an adaptive soft switching technique to achieve improved power efﬁciency over the full output power range. This is achieved by dynamically controlling the inductor current ripple to keep the converter running in soft switching. The feedback control and the soft switching regulation are implemented in a 0.25 µm 60-V TSMC process with an external power stage. The system achieves a peak efﬁciency of 85% at 20 W of output power up to 30-kHz signal frequency.